CVE-2026-9304

LOW EPSS 9.8%
Published May 23, 20261mo ago · Modified Jun 17, 20261w ago
1.3 CVSS 4.0
Low
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Published May 23, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

A security flaw has been discovered in calcom cal.diy up to 4.9.4. The affected element is the function validateUrlForSSRF of the file apps/web/app/api/logo/route.ts of the component Logo API. The manipulation results in server-side request forgery. It is possible to launch the attack remotely. Attacks of this nature are highly complex. The exploitability is described as difficult. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS Details

Base Score
1.3
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity High
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
9.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-918 Server-Side Request Forgery (SSRF) Validation

References 4

  • gist.github.com https://gist.github.com/YLChen-007/b3d0b85767b7e346a291933d602fbb3b
  • vuldb.com https://vuldb.com/submit/812176
  • vuldb.com https://vuldb.com/vuln/365251
  • vuldb.com https://vuldb.com/vuln/365251/cti

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.